I am considering replacing my two bucket seats in the Chinook (that are directly across from the fold out sofa) with two fold out chairs. My plan would be to fold out the sofa and the two chairs and actually sleep across the van rather than lengthwise. Does anyone know where I might find the fold out mechanisms; I think I could have a good upholstery shop install some good foam and fabric to match what I already have. I just need the mechanical arms, etc. Thanks.